my dash is outside constantly as i rarely even have the top on mine unless its winter, and mine looks fine.
as folr the paint yeah i did all my dash panels in krylon color bond spray paint or something like that, forget exactly cause its been years
my interior stuff, yeah i have to agree with jeffy that my mastercrafts are my favorite
then my herco'd tub because i hate rust and liner seals so well. i also boxed in the rear section of my tub so i have a permanent two seater with lockable sotrage area in the rear, that makes the lack of top manageable since i can lock the hole rear of the tub up.
other than that i have a sound bar, wedge speaker holders in the lower roll bar gaps, a diff head unit, multiple 50cal ammo cans mounted for recovery gear, short throw shifter, aftermarket steering wheel, tuffy glove vault, jks racing harnesses, bar mounted extinguishers, and blah blah blah else. haha i dont retain any factory parts half the time when i decide to build something. i have tried to make my wrangler as useful interior wise as possible while making it utilitarian.